501, straight in and double out, played in the browser in real 3D on a dartboard built to the World Darts Federation's published millimetres - 451 mm across, 8 mm double and treble bands, the outside of the double wire 170 mm from the bull and the treble wire 107.4 mm. Every dart is a real projectile thrown from the 2.37 m oche, darts already in the board are solid obstacles, and the checkout table is enumerated exhaustively rather than copied from a chart. An independent implementation; not affiliated with the WDF, the PDC or the DRA.

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